If you need a clue ask the group to send you a letter to your private reply.
4 minutes good
3 minutes excellent
2 minutes exceptional
90 seconds superior
RZ BHCIL BRKMN KV KCLXZVBZ KV RHCM HV K PFMZFBR JXFRHCF ZDZM YZFFXVY MXL HG KV XLZK. - NKMA FJKXV
Solution to previous puzzle (select the yellow text with your cursor to read):
He could charm an audience an hour on a stretch without ever getting rid of an idea. - Mark Twain
HAL'S CRYPTOGRAM HELPER